Forge welding
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Forge welding, also called fire welding, is a solid-state welding process that joins two pieces of metal by heating them to a high temperature and then hammering them together. It may also consist of
Sponge iron traditionally used to forge the Japanese blade nihonto.
A mechanized trip hammer.
Wrought iron
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Wrought iron is an iron alloy with a very low carbon content in contrast to that of cast iron, or 0.25% for low-carbon "mild" steel. Wrought iron is manufactured by heating and melting high-carbon cas
Forge welding
…wrought." This squeezed out air pockets and melted slag, bringing the iron grains into close contact to form a solid block (billet). Many items made of wrought iron have been found by archeologists, that show evidence of forge welding, which date from before 1000 BC. Because iron was typically made in small amounts…
Schematic drawing of a puddling furnace
The microstructure of wrought iron, showing dark slag inclusions in ferrite
Eiffel tower from below
Balcon d'un immeuble parisien